mineral

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Opaque white to translucent; Luster: Vitreous (glassy) to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Opaque white to translucent
Luster: Vitreous (glassy) to greasy

Identified March 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the crystallization of silica-rich hydrothermal veins or within igneous pegmatites. The milky white color is caused by microscopic inclusions of fluids (liquid or gas) trapped during crystal growth. They can be found in geological formations ranging from billions of years old to relatively recent volcanic deposits.

Uses & applications

Used in the glass and ceramic industries, as a source of silicon for electronics, as an abrasive in sandblasting, in construction as aggregate, and widely in jewelry or as 'healing stones' in metaphysical markets.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is often associated with gold in hydrothermal vein deposits. Some of the largest single crystals found have weighed several tons.

Field identification & locations

Identify in the field by its hardness (will scratch glass), lack of cleavage, and white opaque appearance. Commonly found globally in mountains, riverbeds, and beaches. Collectors should look for unique shapes or associations with other minerals like pyrite or chlorite.